


Area Forecast Discussion
Issued by NWS Huntsville, AL
Issued by NWS Huntsville, AL
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454 FXUS64 KHUN 230133 AFDHUN Area Forecast Discussion National Weather Service Huntsville AL 833 PM CDT Thu May 22 2025 ...New NEAR TERM, SHORT TERM, LONG TERM... .NEAR TERM... (Tonight) Issued at 832 PM CDT Thu May 22 2025 A cold front was dropping southeast into TN and southern MO early this evening as WNW 5h flow persists. This will bring a stream of mid and high clouds into the TN valley tonight. There is even some model support of a band of high based showers (more likely virga) overnight. For now, will keep the forecast dry with PoP less than 10%. But like last night, WNW flow can surprise many times over. Otherwise, with dew points in the upper 40s to middle 50s, low temperatures will still dip into the 50s overnight, despite periodic cloud coverage. && .SHORT TERM... (Friday through Sunday) Issued at 832 PM CDT Thu May 22 2025 Friday brings more seasonably cool weather with highs in the middle to upper 70s as the frontal boundary sinks south. Clouds will also tend to decrease. The pattern then becomes more favorable for multiple periods of showers and thunderstorms beginning Friday night into Saturday. Then again on Sunday into early Monday. The surface boundary will attempt to lift northward, but will struggle with outflow/cold pools keeping this from occurring with much confidence. Thus, the surface warm sector may remain mainly just to our south through early Sunday. It`s still unclear if the warm sector will surge north on Sunday afternoon which could increase the risk of stronger storms due to greater surface based instability. Deep layer wind fields will tend to decrease overall by Sunday, which may lower the risk of severe weather. But this may also slow storm motions and increase risk of excessive rainfall with time. && .LONG TERM... (Sunday Night through Thursday) Issued at 832 PM CDT Thu May 22 2025 Sunday night an upper level ridge will continue to translate east across the Gulf coast. Along the northern edge of this, additional shortwaves look to ripple through the TN Vally on Monday. This unfortunately will make for a rather wet holiday with consistent rain and thunder chances throughout the day. These rain and thunder chances will be further supported by an approaching cold front nearing the area Monday evening. While the passage of the front does look to maintain rain chances through the evening, long range models are rather pessimistic regarding an environment supportive of severe weather. Rather, model guidance suggests we will have limited instability due to the ongoing rain throughout the day. While the front looks to pass on Tuesday morning, it looks to weaken as it progresses SE. Thus, low rain and storms chances will be maintained through the long term forecast as the front decays to our SE. Aside from the likely overcast conditions through mid week, the additional byproduct will be mild temperatures across the area for mid May. Temperatures look to remain near or below 80 each day making for slightly cooler than seasonable conditions. && .AVIATION... (00Z TAFS) Issued at 557 PM CDT Thu May 22 2025 VFR conditions will prevail through the duration of the TAF period at both terminals. && .HUN WATCHES/WARNINGS/ADVISORIES... AL...None. TN...None. && $$ NEAR TERM...17 SHORT TERM....17 LONG TERM....RAD AVIATION...RAD